An expandable cylinder filled with neon, a monatomic ideal gas, initially has a volume of 3.0 L at 1.5 atm and 20 oC. Thermal energy is slowly added to the gas until the volume is 11.0 L but the pressure remains constant. What is Ef - Ei, the change in the thermal energy during this expansion? WARNING: Beware of units! You should always use - For Volume use Cubic Meters, m3: 1 m3 = 103 L For pressure use Pascals, Pa: 1 atm = 1.01 x 105 Pa For temperature use Kelvin, K: 1 K = 1 oC (same unit "size") but TK = TC + 273 K kB = 1.38 x 10-23 J/Kelvin (but you probably don't need this). Give your answer to 3 digits, in the Joules.